Motorola Was a Pioneer in Developing Cell Phone Technology,but Their

Multiple Choice

Motorola was a pioneer in developing cell phone technology,but their early phones weighed several pounds and required frequent recharging.As a pioneer,Motorola:

A) allowed competitors to focus on creating demand for their brand.
B) paved the way for alternative brands in that product category.
C) allowed other competing firms to spend less on introductory advertising.
D) allowed competitors to focus on making improved versions.
E) all of these.